Air quality in Guardo, Castile and León, Spain today
Mr. Duck’s Air Quality Score
Good air today for Guardo, Castile and León, Spain
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Guardo today is classified as Good. The primary pollutant measured is PM10, and the latest reading shows a concentration of 3.0 µg/m³ based on four valid observations.
Data are shown via OpenAQ. This page is informational; for health guidance, use official sources such as EPA AirNow or WHO.
Latest sensor values
PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).
What the data includes
The Guardo air‑quality record contains six pollutant measurements taken at a single monitoring site. All six common urban pollutants are represented: carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM₁₀) and sulfur dioxide (SO₂). For each pollutant the data set includes a single value that is both the minimum, median and maximum observed concentration, so there is no spread to describe. CO registers 100 µg/m³, NO 2 µg/m³, NO₂ 21 µg/m³, O₃ 54 µg/m³, PM₁₀ 3 µg/m³ and SO₂ 6 µg/m³.
The timestamps show an uneven picture of data freshness. The most recent updates for four pollutants – NO₂, O₃, PM₁₀ and SO₂ – were recorded on 2026‑02‑09 at 15:00 UTC, placing them within the last seven days. By contrast, the CO reading dates back to 2025‑12‑22 08:00 UTC and the NO measurement is from 2024‑01‑29 23:00 UTC, both of which are considerably older. Consequently, while half of the pollutants have very recent values, the other half rely on data that is several months or years old.
Because only one monitoring row exists for each pollutant, the dataset does not capture spatial variation across Guardo and offers no information about how concentrations change over time. Users should keep in mind that conditions can differ by location within the city and that the older CO and NO values may not reflect current levels.
Learn more about sources and filtering: About the data.
Trusted references: WHO (Air pollution) · US EPA AirNow · European Environment Agency (Air)
Latest sensor values (bars)
PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).
Data notes
The data for Guardo are based on four valid measurements and were refreshed recently, with the latest update recorded on 2026‑02‑09 at 15:00 UTC, meaning they are updated within three days. This snapshot reflects conditions at that specific time; air quality can vary across different neighborhoods and moments throughout the day, so actual exposure may differ from what is shown here.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| GUARDO | co | 100.0 | µg/m³ | 2025-12-22 08:00 UTC |
| GUARDO | no | 2.0 | µg/m³ | 2024-01-29 23:00 UTC |
| GUARDO | no2 | 21.0 | µg/m³ | 2026-02-09 15:00 UTC |
| GUARDO | o3 | 54.0 | µg/m³ | 2026-02-09 15:00 UTC |
| GUARDO | pm10 | 3.0 | µg/m³ | 2026-02-09 15:00 UTC |
| GUARDO | so2 | 6.0 | µg/m³ | 2026-02-09 15:00 UTC |